Question 365: Ray Optics

Question

An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in  cm) of the slab is

Accepted Answer

Seeing from one end, h
1
= $$\mu $$ ÃÂ (h Ã¢ÂÂ b) = 3/2 ÃÂ 5 = 15/2 cm
From other end of the slab, h
2
= $$\mu $$ ÃÂ h = 3/2 ÃÂ 3 = 9/2 cm
Now total height, (15/2 + 9/2) = 24/2 = 12 cm

Answer

8

Answer

10

Answer

12

Answer

16

Ray Optics

An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is

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